The Smart Inverter control of Samsung 1.5 Ton DC Inverter AC AR-18ASFZGWKY WITH T3 COMPRESSOR allows it to adjust its capacity and speed with great accuracy. This means that the AC unit will run at low capacity most of the time, especially at night. This logical speed of operation is highly beneficial for energy conservation. The Smart Inverter control works well with the DC rotary compressor to ensure vibration free operation at all speeds.